.main {
    background-color: #f5f5f5;
}

.history .history-inner {
    background-color: #fff;
    border-top: 1px solid #e6e6e6;
    padding-left: 50px;
    padding-bottom: 110px;
    padding-top: 36px;

    display: flex;
    flex-direction: column;
}

.history .btn-more {
    /*align-self: flex-end;*/
    margin-left: auto;
    margin-right: 0;
}

.history .wrapper {
    position: relative;
    z-index: 205;
}

.history {
    position: relative;
    overflow: hidden;
}

.history::before {
    content: "";
    width: 50%;
    z-index: 195;
    position: absolute;
    height: 100%;
    bottom: 0;
    right: 0;
    background: #fff;
}

.history .wrapper::after {
    content: "";
    position: absolute;
    width: 429px;
    height: 100%;
    bottom: 0;
    left: calc(100% - 140px);
    background: url("../images/about_us/history_back.png") right/cover no-repeat;
    pointer-events: none;
    z-index: 210;
}

.history h2 {
    font-size: 26px;
    margin-bottom: 16px;
}

.history .desc {
    color: #666666;
    font-size: 14px;
}

.history .desc p {
    line-height: 26px;
    margin-bottom: 14px;
}

.links1 {
    position: relative;
    z-index: 210;
    display: flex;
    align-items: stretch;
    margin-top: -105px;
    margin-bottom: 72px;
}

.links1>.left {
    width: 50%;
    flex: 0 0 auto;
    position: relative;
}

.links1>.right {
    width: 50%;
    flex: 0 0 auto;
    padding-top: 105px;
    padding-right: calc((100vw - 1200px) / 2 - 17px);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-left: 30px;
}

.links1 .btn-video-play {
    top: 105px;
}

.links1 .left img {
    display: block;
    width: 100%;
    height: 100%;
}

.links1 a.red-corner {
    width: calc(100% / 3);
    flex: 0 0 auto;
}

.idea .wrapper {
    display: flex;
    justify-content: space-between;
    padding-top: 70px;
    padding-bottom: 80px;
}
.idea .wrapper .block {
    width: calc(50% - 25px);
    flex: 0 0 auto;
}

.idea .wrapper img {
    display: block;
    width: 100%;
    height: 328px;
    object-fit: cover;
}

.idea .block .info {
    background-color: #fff;
    padding: 32px 40px;
}

.idea .block .info .title {
    font-size: 24px;
    margin-bottom: 10px;
}

.idea .block .info .desc {
    height: 100px;
    overflow: hidden;
    margin-bottom: 20px;
}

.idea .block .info .desc p {
    font-size: 14px;
    line-height: 24px;
}

.idea-inner {
    background-color: #fff;
    display: flex;
    margin-bottom: 70px;
}

.idea-inner>* {
    width: 50%;
    flex: 0 0 auto;
}

.idea-inner .left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
    padding: 40px;
}

.idea-inner .left h2 {
    font-size: 26px;
    margin-bottom: 20px;
}

.idea-inner .desc {
    font-size: 14px;
    margin-bottom: 40px;
}

.idea-inner .desc p {
    line-height: 26px;
}

.idea-inner .right {}

.idea-inner .right img {
    display: block;
    width: 100%;
    height: auto;
}

/* .responsibility {
    color: #fff;
    background: url("../images/about_us/responsibility.jpg") center/cover fixed no-repeat;
} */

.responsibility {
    position: relative;
    width: 100%;
    height: 800px;
    background: url("../images/about_us/automating-bg.jpg") center/cover no-repeat;
}

.responsibility .right-container {
    position: absolute;
    right: 10%;
    top: 20%;
    width: 536px;
}

.responsibility .right-container img {
    width: 100%;
}

.responsibility .right-container .btn-more {
    position: relative;
    z-index: 4;
    margin-top: -15%;
}

.responsibility h2 {
    font-size: 26px;
    margin-bottom: 18px;
}

.responsibility .desc {
    margin-bottom: 40px;
    font-size: 14px;
    line-height: 24px;
}

.responsibility .center {
    height: 500px;
    margin: auto;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.links2 .wrapper {
    display: flex;
    justify-content: space-between;
    padding-top: 70px;
    padding-bottom: 80px;
}

.links2 .wrapper .block {
    width: calc(50% - 25px);
    flex: 0 0 auto;
}

.links2 .block img {
    display: block;
    width: 100%;
    height: 328px;
    object-fit: cover;
}

.links2 .block .info {
    background-color: #fff;
    padding: 32px 40px;
}

.links2 .block .info .desc {
    height: 72px;
    overflow: hidden;
    margin-bottom: 20px;
}

.links2 .block .info .desc p {
    font-size: 14px;
    line-height: 24px;
}

.links2 .block .info .title {
    font-size: 24px;
    margin-bottom: 10px;
}

.section-100th {
    display: block;
}

.section-100th img {
    display: block;
    object-fit: cover;
    object-position: center;
    width: 100%;
    height: 401px;
}

@media (max-width: 960px) {
    .history-inner {
        padding-right: 45px;
    }

    .history .desc {
        margin-bottom: 20px;
    }

    .history .btn-more {
        /*align-self: flex-start;*/
        margin-left: 0;
    }

    .links1 {
        padding-left: 20px;
        padding-right: 20px;
        display: block;
        margin-top: 0;
    }

    .history .history-inner {
        padding-bottom: 50px;
    }

    .links1>.left {
        width: 100%;
    }

    .links1>.right {
        width: 100%;
        padding-top: 24px;
        padding-left: 0;
    }

    .links1 a.red-corner {
        width: 50%;
    }

    .links1 a.red-corner:nth-child(1) {
        width: 25%;
        justify-content: flex-start;
    }

    .links1 a.red-corner:nth-child(3) {
        width: 25%;
        justify-content: flex-end;
    }

    .idea .wrapper {
        display: block;
        margin-bottom: -30px;
        padding-left: 90px;
        padding-right: 90px;
    }

    .idea .wrapper .block {
        width: 100%;
        margin-bottom: 30px;
    }

    .idea-inner {
        display: block;
    }

    .idea-inner>* {
        width: 100%;
    }

    .idea-inner .left {
        margin-bottom: 48px;
    }

    .idea-inner .right {
        padding-left: 0;
    }

    .responsibility {
        background-attachment: unset;
    }

    .links2 .wrapper {
        display: block;
        margin-bottom: -30px;
        padding-left: 90px;
        padding-right: 90px;
    }

    .links2 .wrapper .block {
        width: 100%;
        margin-bottom: 30px;
    }

    .idea-inner .left {
        padding: 30px;
    }
}

@media (max-width: 750px) {
    .history .history-inner {
        padding: 20px;
    }

    .history::before {
        display: none;
    }

    .history .wrapper::after {
        display: none;
    }

    .links1 .right a.red-corner {
        width: calc(100% / 3);
        justify-content: center;
    }

    .links1 {
        margin-bottom: 30px;
    }

    .idea-inner .left {
        padding: 20px;
    }

    .idea-inner .left {
        margin-bottom: 20px;
    }

    .responsibility .center {
        width: 80%;
        height: 60vw;
        min-height: 320px;
    }

    .links2 .wrapper {
        padding: 30px 20px;
    }

    .links2 .block img {
        height: auto;
    }

    .links2 .block .info {
        padding: 20px;
    }

    .idea .wrapper {
        padding: 30px 20px;
    }

    .idea .block img {
        height: auto;
    }

    .responsibility {
        height: 700px;
    }

    .responsibility .right-container {
        width: 70%;
    }
}

@media (max-width: 640px) {
    .links1 .right {
        display: block;
    }

    .links1 .right a.red-corner {
        width: 100%;
        display: block;
        justify-content: flex-start;
        text-align: center;
        padding-top: 4px;
        padding-bottom: 4px;
    }

    .links1 .right a.red-corner::after {
        height: 1px;
        width: 100%;
        top: auto;
        bottom: 0;
    }

    .idea-inner .left h2,
    .history h2 {
        font-size: 22px;
        margin-bottom: 10px;
    }

    .idea-inner .desc,
    .history .desc {
        margin-bottom: 18px;
    }

    .section-100th img {
        object-fit: cover;
        object-position: center;
        width: 100%;
        height: 67vw;
    }

    .responsibility {
        height: 600px;
    }
    .responsibility .right-container .btn-more {
        position: absolute;
        right: 0;
        bottom: -80px;
    }
}

@media (max-width: 550px) {
    .responsibility {
        height: 500px;
    }
}